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Oscillating boundary condition
Posted 08.12.2012, 04:04 GMT-5 Computational Fluid Dynamics (CFD), Geometry, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.0, Version 4.2 2 Replies
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How can we impose oscillating boundary condition in terms of velocity, on a boundary of a defined geometry.
Thanks in advance
Saurabh
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most if not all BC accept not only a scalar value, but a full field expression depending on both spatial x,y,z or tempral "t" dimensions.
So either you physics is designed for time solveing and you can write out Amplitude*sin(2*pi*freq*t), or you are in a steady state case and you use the simpler and quicler to solve harmonic development of the frequency domain solvers and you express amplitudes in your BC (and possibly physe lag via a complx phasor expression) and you define your frequencyor frequency span (series of) in the frequency domain solver node
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Good luck
Ivar
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